2016-10-04 17:39 GMT+02:00 Bob Weinand <bobw...@hotmail.com>: > > > Am 4.10.2016 um 16:33 schrieb Pascal KISSIAN <php-mailing-l...@lool.fr>: > > > >> -----Message d'origine----- > >> De : Lauri Kenttä [mailto:lauri.ken...@gmail.com] > >> Envoyé : mardi 4 octobre 2016 16:21 > >> À : Pascal KISSIAN <php-mailing-l...@lool.fr> > >> Cc : internals@lists.php.net > >> Objet : Re: [PHP-DEV] Feature Request: inline pseudo-instruction > >> > >> On 2016-10-04 14:33, Pascal KISSIAN wrote: > >>> I have an application where a small file is included at multiple > >>> places. > >>> > >>> The include is done about an average of 100.000 times . > >> > >> I'm just wondering if you have ever heard of functions? You really > should write a function, include it only once, and then simply call the > function instead of repeatedly >including the file. Calling a function is a > lot faster than including a file. > >> > >> -- > >> Lauri Kenttä > > > > Function is not appropriate when the "inlined code" has to share 20-30 > local variables ... > > Having a function with 30 args, or having to build and access an array > is not very efficient nor natural... > > Local variables include 6 nested "for loop" indices and local > variables/arrays needed for the computing. >
6-level nested loop and 20-30 local variables in scope has enought complexity to refactor. This stuff definitelly needs refactor. I wouldn't allow any developer to commit such code, it woudn't pass code review. There was time I also have such code but it wasn't maintainable, once written was never beeing understood by any other developer. I think you should read about CleanCode -> https://www.amazon.com/Clean-Code-Handbook-Software-Craftsmanship/dp/0132350882 > Hey, > > why do you think are your includes so slow? > Apart from the include itself (which in itself is fairly slow due to > filesystem access; or in case with opcache, at the very least copying the > op_array etc.), it does exactly this: building an array and importing it > into the included files scope. > > Also, 20-30 local variables? That sounds a bit like your code has way too > many responsibilities in one same place. Perhaps you should restructure > your code instead, but the way you describe it, no. > > If your code is so "hot", that also even function calls would be quite > significant then you should probably really inline your code there as a > perf optimization. Anyway, code with that many variables almost always can > meaningfully refactored. > > It is not the languages task to optimize insane code ... > > Bob > > > > > -- regards / pozdrawiam, -- Michał Brzuchalski brzuchalski.com
